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Finding the Fourth Proportional to 64,041.80, 96,005.10 and 40,656.20

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Solution

The fourth proportional to 64,041.80, 96,005.10 and 40,656.20 is: 60,947.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,041.80 : 96,005.10 = 40,656.20 : x
  2. Step 2: Convert to fraction form
    64,041.80/96,005.10 = 40,656.20/x
  3. Step 3: Cross multiply
    64,041.80x = 96,005.10 × 40,656.20
  4. Step 4: Simplify right side
    64,041.80x = 3,903,202,546.62
  5. Step 5: Solve for x
    x = 3,903,202,546.62/64,041.80
  6. Step 6: Final answer
    x = 60,947.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.